73443986
Sep 16, 1983
Sep 3, 1985
ELECTRONIC, ELECTROMECHANICAL AND PNEUMATIC CONTROLS FOR USE IN CONTROLLING HEATING, VENTILATING, AND AIR CONDITIONING INSTALLATIONS; BUILDING AUTOMATION AND ENERGY MANAGEMENT SYSTEMS COMPRISING COMPUTER-OPERATED ALARM, INTERCOM, HEATING, AIR CONDITIONING AND ENERGY CONTROL; AUTOMATIC VALVES, NAMELY, PLUG-TYPE, BUTTERFLY AND MIXING VALVES WITH ELECTRIC OR PNEUMATIC DRIVES; ELECTRIC AND ELECTRONIC SWITCHES; RIPPLE CONTROL RECEIVERS; CENTRALIZED CONTROLS FOR USE IN CONTROLLING WATER SUPPLY INSTALLATIONS; AND STRUCTURAL PARTS FOR ALL THE ABOVE-DESIGNATED SYSTEMS
Electrical and Scientific Apparatus